Difference between revisions of "Team:ShanghaitechChina"

 
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             <a href="https://2016.igem.org/Team:ShanghaitechChina" class="navbar-brand" style="font-size:28px;margin-top:3%">Solar Hunter</a>
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             <a href="https://2016.igem.org/Team:ShanghaitechChina" class="navbar-brand" style="font-size:28px;margin-top:2%">Solar Hunter</a>
 
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   <img class="introimg" src="https://static.igem.org/mediawiki/2016/2/26/Intro-image.jpg">
 
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<img class="introimg" src="https://static.igem.org/mediawiki/2016/7/71/T--ShanghaitechChina--member--bf--Home_Big_Picture.png" style="margin-top:45%;">
 
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We conceived and proposed an integrative artificial photosynthesis platform, Solar Hunter, in which engineered strains, living biofilms and biofilms-interfaced semiconductor nanomaterials reside in harmony, carefully divid individuals' labor and synergistically work towards value-added products.  
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We conceived and proposed an integrative artificial photosynthesis platform, Solar Hunter, in which engineered strains, living biofilms and biofilms-interfaced semiconductor nanomaterials reside in harmony, carefully divide individuals' labor and synergistically work towards value-added products.  
  
  
 
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<div class="row"><center><h1><b>Integrative Biohydrogen System</b></h1></center>
 
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<a href="https://2016.igem.org/Team:ShanghaitechChina/IBS"><img class="imground" src="https://static.igem.org/mediawiki/2016/5/5d/Plan_1_V2.jpg"></a>
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<a href="https://2016.igem.org/Team:ShanghaitechChina/IBS"><img class="imground" src="https://static.igem.org/mediawiki/2016/c/c9/T--ShanghaitechChina--member--qlc--plan1_V5.jpg"></a>
 
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We proposed and demonstrated a sun-powered biofilm-interfaced artificial hydrogen-producing system, Solar Hunter, that harnesses the energy from sun light. Biofilm-anchored nanorods can efficiently convert photons to electrons, which seamlessly tap into the electron chain of engineered strain carrying FeFe hydrogenase gene cluster, thereby achieving high-efficiency hydrogen production. Furthermore, the intrinsic adherence of biofilms towards various interfaces allows us to grow biofilms on easy-separation micro-beads, therefore facilitating recyclable usage of the biofilm-anchored NRs and endowing this whole system with recyclability.
 
We proposed and demonstrated a sun-powered biofilm-interfaced artificial hydrogen-producing system, Solar Hunter, that harnesses the energy from sun light. Biofilm-anchored nanorods can efficiently convert photons to electrons, which seamlessly tap into the electron chain of engineered strain carrying FeFe hydrogenase gene cluster, thereby achieving high-efficiency hydrogen production. Furthermore, the intrinsic adherence of biofilms towards various interfaces allows us to grow biofilms on easy-separation micro-beads, therefore facilitating recyclable usage of the biofilm-anchored NRs and endowing this whole system with recyclability.
  
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Quantum dots (QDs) and nanorods (NRs), as semiconductor nanocrystals, are of fundamental and technical importance. Owing to their extraordinary optical properties and high quantum-yield efficiency, these nanoobjects are often geared towards many energy-relevant applications. In our IGEM project, we conceive to harness those nanoscale objects as solar energy harvester. When firmly anchored onto E. coli biofilms through coordination chemistry, they can be easily recycled together with scalable biofilm coatings when necessary, and meanwhile, still possess the capability to efficiently convert photons into electrons upon light exposure. The aquired electrons would then tap into the electron chains of engineered strain harboring hydrogenase gene cluster, thereby assisting the enzymes to fulfill hydrogen production.
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Nanomaterials are those nanoscale objects serving as solar energy harvester. When firmly anchored onto <i>E. coli</i> biofilms through coordination chemistry, they can be easily recycled together with scalable biofilm coatings and still possess the capability to efficiently convert photons into electrons upon light exposure. The acquired electrons would tap into the electron chains of engineered strain harboring hydrogenase gene cluster, thereby fulfilling hydrogen production.
 
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<a href="https://2016.igem.org/Team:ShanghaitechChina/Nanomaterials"><img class="imground" src="https://static.igem.org/mediawiki/2016/9/94/T--ShanghaitechChina--member--qlc--nanomaterials.jpg"></a>
 
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<a href="https://2016.igem.org/Team:ShanghaitechChina/Biofilm"><img class="imground" src="https://static.igem.org/mediawiki/2016/7/71/Biofilm_2.jpg"></a>
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<a href="https://2016.igem.org/Team:ShanghaitechChina/Biofilm"><img class="imground" src="https://static.igem.org/mediawiki/2016/a/a4/T--ShanghaitechChina--member--qlc--biofilm.jpg"></a>
 
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Biofilms function as a platform to sustain the whole system in vitro. Biofilm-anchored nanorods can efficiently convert photons to electrons, which transfer to engineered strain producing FeFe hydrogenase gene cluster, thereby achieving high-efficiency in biohydrogen production. In addition, a brilliant traits, the intrinsic adherence of biofilms towards various interfaces, allows us to grow biofilms on easy-separation micro-beads. Based on those merits, biofilm stand out by facilitating recyclable usage of the biofilm-anchored NRs and endowing this whole system with recyclability.
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Biofilms function as a platform to sustain the whole system. Biofilms can immobilize NRs firmly so that they prevent potential damage and stresses caused by free NRs, as is the case in traditional artificial photosynthesis system. In addition, the intrinsic adherence of biofilms towards various interfaces, allows us to grow biofilms on easy-separation micro-beads. Based on those merits, biofilm stand out by facilitating recyclable usage of the biofilm-anchored NRs and endowing this whole system with recyclability.
 
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In our sun-powered biofilm-interfaced hydrogen-producing system, hydrogenase harnessed in engineered E. coli are conceived to efficiently catalyze proton reduction upon receiving electrons originally donated by semiconductor nanomaterials. Electron transportation from semiconductors to hydrogenase could be bridged and facilitated by the use of mediators, methyl viologen. To achieve efficient enzymatic activities, we codon-optimized and constructed the whole hydrogenase gene clusters (from Clostridium Acetobutylicum) by leveraging the multi-expression Acembl System.  
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In our sun-powered biofilm-interfaced hydrogen-producing system, hydrogenase harnessed in engineered <i>E. coli</i> are conceived to efficiently catalyze proton reduction upon receiving electrons originally donated by semiconductor nanomaterials. Electron transportation from semiconductors to hydrogenase could be bridged and facilitated by the use of mediators, methyl viologen. To achieve efficient enzymatic activities, we codon-optimized and constructed the whole hydrogenase gene clusters (from <i>Clostridium acetobutylicum</i>) by leveraging the multi-expression Acembl System.  
 
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<a href="https://2016.igem.org/Team:ShanghaitechChina/Hydrogen"><img class="imground" src="https://static.igem.org/mediawiki/2016/7/76/T--ShanghaitechChina--member--qlc--hydrogenase.jpg"></a>
 
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<p></p>
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ShanghaiTech University, No. 393, Huaxiazhong Rd., Zhangjiang High-tech Park, Pudong Area, Shanghai 201210, China. Correspondence
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E-mail: zhongchao@shanghaitech.edu.cn
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Latest revision as of 07:23, 2 December 2016

ShanghaiTech University